Temporary binder.



R. R, DARWIN. TEMPORARY BINDER.

APPLICATION FILED JUNE 14-, 1909.

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ROY R. DARWIN, OF LANSING, MICHIGAN.

TEMPORARY BINDER.

Application filed June 14, 1909.

To all whom it may concern:

Be it known that I, ROY R. DARWIN, a citizen of the United States,residing at Lansing, in the county of Tngham, State of Michigan, haveinvented certain new and useful Improvements in Temporary Binders; and Ido declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the figures of reference marked thereon,which form a part of this specification.

This invention relates to temporary binders, and consists in theconstruction and arrangement of parts hereinafter more fully set forthand pointed out particularly in the claims.

The object of the invention is to provide simple and etlicient means fortemporarily binding the leaves of a book so as to enable any number ofleaves to be bound therein, and any one or more of the leaves removed,when desired; provision being made for adjusting the binder according tothe number of leaves to be bound, and for quickly clamping said leaves,and as quickly releasing them, the leaves being insertible in the binderwithout perforating or notching them, or doing any preparatory workthereon. The above object is attained by the structure illustrated inthe accompanying drawings, in which Figure 1 is a plan view of an openbook equipped with my improved binder, showing a number of leavesclamped or bound therein. Fig. 2 is a horizontal section through a caseforming the back of the binder and through the binding parts and leavesclamped therein, the adjusting screws appearing in elevation. Fig. 3 isa fragmentary view similar to Fig. 2, showing the clamping or bindingparts in the unlocked position. Fig. 4L is a longitudinal section as online 4-L of Fig. 2. Fig. 5 is a perspective view of the link or yokewhich connects the pressure bar with the slotted cam lever whichactuates it. Fig. 6 is a transverse section through'the actuatableclamping parts, as on line 6-6 of Fig. 4.

Referring to the characters of reference, 1 designates a metal casewhich is prefer ably rectangular and in the form of a tray, said caseserving to contain the clamping or binding parts forming the backportion of Specification of Letters Patent.

Patented June "2, 1910.

Serial No. 502,024.

the book. The leaves 2 of the cover are secured to said metal case inany suitable manner. The flange 3 of the case serves as an abutmentagainst which the leaves 4: are clamped to bind them in the book. Theinner ends of the adjusting screws 5 are swiveled at- 6 in said flange 3of the case near the ends thereof, the outer ends of said screws passingthrough the outer flange 7 of the case near its ends and having theknurled heads 8.

Extending longitudinally of the case and movable transversely thereof isa stress bar 9 which is preferably formed of channel iron and whosereinforced ends 10 are tapped so as to receive the threads of the screws5 which pass through the ends of said bar. By rotating said screws thebar 9 may be adjusted toward or from the abutment flange 3 of the casewhich forms one of the clamping members. Pivotod at 11 between the sidesof the bar 9 is an actuating lever 12 carrying a cam 13, said lever having in the cam portion thereof a slot 14 concentric with the pivotalpoint 11 of said lever. Passing through an opening 15 in the bar 9 andembracing the sides of the lever 12 is a link 16 in the form of a yoke,the sides of which are connected by a transverse pin 17, whose ends aresecured in the apertures 18 in the sides of said yoke, and which passesthrough the curved slot 14L in the cam lever. Adapted to embrace thestress bar 9 is a pressure bar 19 also formed of channel iron andserving as the movable clamping part which confines the leaves 4 betweenits straight face and the abutment 3 of the case. The link or yoke 16 isrigidly secured to the pressure bar by means of rivets 20, which passthroughthe apertures 21 in the extensions 22 of said yoke and throughsaid bar. The connection between the cam lever and the yoke 16 is suchthat when the free end of said lever is swung outwardly to the positionshown in Fig. 3, the pressure bar 19 will be drawn away from theabutment 3, thereby relieving the leaves 4 from all pressure, enablingthe contained leaves to be removed and new leaves in serted, as may bedesired.

T o clamp the leaves in the book with the parts in the position shown inFig. 3, the number of leaves it is desired the book shall contain areplaced between the abutment 3 and the pressure bar 19. The stress bar 9is then adjusted through the medium of the screws 5 to space thepressure bar properly from the abutment flange 3 according to the numberof leaves between said parts, when by throwing the free end of the leverdown to the position shown in Fig. 2, the cam 13 of said lever willengage the base of the yoke 16 and carry the pressure bar forciblyagainst the leaves 4: to securely retain them in place, the straightbearing face 23 of the cam 13 engaging the base of the yoke to lock thelever against accidental movement owing to the fact that a portion ofsaid bearing face extends beyond the horizontal center of the axis ofsaid lever, whereby said lever becomes self locked. To release theleaves, it is only necessary to throw the free end of the leveroutwardly to the position shown in Fig. 3, when the terminal of the slot14 in said lever will engage the pin 17 and retract the yoke andpressure bar 19 connected thereto.

The length ofthe slot 14 in the lever 12 affords a free movement of thelever without imparting but a comparatively slight movement to thepressure bar 9, so that said lever when in the locked position may lieparallel to and within the sides of the stress bar 9. To facilitate theactuation of said lever, its free end is provided with a laterallyprojecting button 24. By means of the adjusting screws 15, the stressbar may be so positioned in the case as to enable the clamping thereinof any number of leaves from the minimum to the maximum capacity of thebinder.

The connection between the pressure bar and the actuating lever is ofsuch a character as to aflord-a pivotal mounting for the pressure bar,whereby it is permitted to adjust itself to compensate for anyinequality in the thickness of the leaves between its ends and theabutment 3.

Having thus fully set forth my invention, what I claim as new and desireto secure by Letters Patent, is

1. A temporary binder, comprising an abutment, a pressure bar movabletoward and from said abutment, an adjustable support for the pressurebar, and a lever piv- 1 oted to said support and connected with saidbar.

2. A temporary binder, comprising an abutment, a pressure bar paralleltherewith and movable with respect thereto, an actuating lever having amovable connection with said pressure bar, and a stress bar on whichsaid lever is pivotally mounted.

3. A temporary binder, comprising a case having an abutment at one edge,a stress bar movable transversely of the case, a lever pivoted to saidstress bar, a pressure bar mounted on said stress bar, and a movableconnection between said lever and pressure bar to enable said bar to bemoved toward and from said abutment by an actuation of said lever.

4. A temporary binder, comprising a case, a stress bar movabletransversely of the case, adjusting screws engaging the ends of said barfor imparting movement thereto, a lever pivoted to the stress bar, saidcase having an abutment at one side thereof, a pressure bar parallelwith said abutment and movable with respect thereto, and a linkconnecting said pressure bar with said lever.

5. A temporary binder, comprising a stress bar, adjusting screws passingthrough the ends of said bar, an abutment, a pressure bar movable withrespect to said abutment, an actuating lever carried by the stress bar,and a connection between said lever and said pressure bar.

6. A temporary binder, comprising a case having an abutment at one sidethereof, a pressure bar parallel with said abutment, a stress bar withwhich the pressure bar is movably connected, means carried by the stressbar for actuating the pressure bar, and means for adjusting the ends ofthe stress bar with respect to said abutment.

In testimony whereof, I sign this specification in the presence of twowitnesses.

ROY R. DART/VIN.

